Node JS is a popular framework for web application development. It has several advantages that make it an attractive option for developers.

It is a full-stack JavaScript server-side programming language that allows you to use the same code on both the front-end and back-end of your app. It also has a large community that backs it up.

Here Are The Top Reasons to Choose Node.js For Web App Development

1. Scalability

Node JS is a full-stack JavaScript framework that allows developers to build real-time network applications. It has a single-threaded event model that facilitates flexibility, scalability, and high performance.

Node has a non-blocking I/O system and the Google V8 engine that makes it possible to process multiple requests at once, leading to faster performance. However, the single-threaded event loop can slow down when it receives a CPU-bound task.

In these cases, Node's asynchronous programming empowers it to carry out minor tasks in the background without interfering with the core thread. This feature ensures high performance in web application development, even when it receives heavy requests or I/O-intensive tasks.

2. Scalability

Scalability is the ability of a system, network or software to handle a growing amount of work. It can be horizontal (scale-out) or vertical (scale-up).

Scalable systems are more effective for addressing changing needs, trends, and increasing productivity. They can accommodate increased demands with minimal costs and less downtime.

In the context of IT, scalability is important for any application that expands beyond its initial function. It’s also a consideration in the business world, where scalable firms are more attractive to buyers.

Node JS is known for its scalability because it’s designed to handle heavy traffic quickly. It uses Google’s high-performing JavaScript engine, called V8. This engine can compile the code into machine code and execute it very fast.

3. Asynchronous Programming

Asynchronous programming allows applications to run multiple tasks simultaneously. This is useful for situations where long-running processes need to be completed quickly.

Examples include CPU-bound operations such as crunching numbers, doing mathematical calculations or performing a significant graphic transformation. It also works well for IO operations such as reading/writing files and network connections.

Synchronous programming, on the other hand, runs tasks in a linear fashion. This makes it easier to debug and understand, as there is typically only one path for the code to follow.

4. Convenience

Unlike traditional data-driven web applications that wait for HTTP requests, Node is a single-threaded framework. This allows it to carry out asynchronous tasks without blocking the main core thread.

It also uses the V8 engine from Google, which is regarded as the quickest JavaScript engine available. This means that Node can quickly process operations such as database reading and writing, network connections, and file system access.

It also makes it easy for Node.JS developers to add new features to their application, which is often a challenging task when working with other frameworks. The npm package manager provides access to hundreds of thousands of reusable packages, and it automates many build toolchain steps for developers.

5. Speed

JavaScript is a full-stack programming language that developers use for both front-end and back-end development. Its cross-platform nature makes it easy to build real-time network applications.

Node JS is an asynchronous language that allows for the rapid completion of tasks. Its single-thread event-driven runtime environment, and the Google V8 engine it uses, allow it to handle heavy I/O operations, such as database reading and writing, and file system access, at a high speed.

However, if your application requires a lot of CPU processing, Node JS may not be the best choice. This is because it's a single-threaded event-driven program that blocks incoming requests when a synchronous function calls it.